Similar to Imagecodr, this collection of browser extensions (Chrome and Firefox supported) help you develop appropriate attributions for Creative Common licenced Flickr photos. One step up from Imagecodr, as well as a version for web pages (like Imagecodr) this one also provides a text string for addition to a presentation or other media.
For anyone struggling with attributing their Creative Commons Images, I have written a blog post on a tool I have found. Works on Prezi - if you have tried to use ImageCodr and cannot embed code.